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Ground wire

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there is ground wire with the USB cable for v88R and v88R3 even old uint V88

When you ground it to the block u can be online without turning the ski on 

That ground wire to which pin gos


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Assuming you are talking about the Yamaha ECU? 

The "power up" ground wire is connected to pin 7 on the separate 26 pin plug. This pin sends the ground signal to the main relay.  Unfortunately I dont have a good record of how the pins are numbered on that connector so I cant tell you exactly which pin is pin 7 but it will be one of the corner ones.

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